From the Department of Anesthesiology, Erasmus Medical Center, Rotterdam, The Netherlands (M.JVDB), Division of Pediatric Anaesthesia, Montreal Children's Hospital, McGill University Centre, Montreal, Canada (MJ), Unit for Research & Innovation, Department of Anaesthesia, IRCCS Istituto Giannina Gaslini, Genova, Italy (ND), Department of Anaesthesia, Montreal Children's Hospital, Montreal, QC, Canada (TE), Department of Anaesthesia, Akershus University Hospital and Oslo University, Oslo, Norway (TGH), Clinique d’Anesthésie-Réanimation pédiatrique, Hôpital Jeanne de Flandre, CHU de Lille, Lille, France (FV), Department of Paediatric Anaesthesiology and Intensive Care, Wroclaw Medical University, Wroclaw, Poland (MZ), Department of Anesthesiology, Erasmus Medical Center - Sophia Children's Hospital, Rotterdam, The Netherlands, Adrz-EramusMC, Goes, The Netherlands (JCDG)

Correspondence to Jurgen C. de Graaff, Erasmus Medical Center and Sophia Children's Hospital, PO box 2060, 3000CB Rotterdam, The Netherlands. E-mail: [email protected]

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